career path - In astronomy, would it be possible to continue doing postdocs for up to 15 years to increase your chance of getting a permanent position?

I heard that in astronomy most people do only one or two postdocs. If they haven't found a permanent position after this, they quit astronomy and find a job in a different field like physics, economics, or information technology. And the vast majority of people who get a PhD in astronomy will end up quitting astronomy because the astronomy is one of the hardest field to get into.

But suppose that your parents were rich and provided you with more than enough money to live for as long as you wanted, which means that you have no pressure to quit your postdocs to get a job in a different field than astronomy in order to earn more money.

Would it be possible to continue doing postdocs after postdocs for up to 15 years (so up to 6 postdocs) to increase your chance of getting a permanent position compared to those who only do one or two postdocs?

Or would doing more than 2 postdocs not increase your chance of getting a permanent position anymore? Maybe all employers reject people who do more than 2 postdocs because they all see them as failures, no-good, incompetent and unskillful?